Linux System Administrator (Poly and 15+ years of experience required)

Tiber Technologies is seeking an experienced Linux System Administrator to support the installation, maintenance, and security of a complex technical environment. The role requires both technical expertise and the ability to follow operational procedures. Tiber fosters growth through learning, mentorship, and a collaborative work environment.

Requirements

• Install, configure, and maintain Linux systems (CentOS and/or RHEL).
• Troubleshoot Linux performance, connectivity, and storage-related issues.
• Build, configure, and maintain virtual machines (VMs).
• Perform system patching using YUM and ensure compliance with security directives.
• Review and act on vulnerability reports, support IAVA compliance, and manage POA&Ms.
• Manage PKI certificates - renewing and revoking as needed.
• Utilize Nessus for scanning and monitoring.
• Administer Nagios for system monitoring and alerting.
• Apply and maintain configurations using Ansible playbooks and ad hoc commands.
• Develop and maintain SOPs using Confluence.
• Support compliance and monitoring
• Write and maintain intermediate-level shell scripts for automation.
• Use Git for version control, including check-in, branching/tagging, and repository management.
• Experience documenting procedures and processes in Confluence.

Benefits

• Ongoing learning opportunities
• Mentorship
• Supportive environment